I am trying to include some custom events/methods when I Check a ListViewItem. I have my Class and Inherited the ListViewItem, but can not figure out how I can achieve this. I have looked at adding custom event handlers, but don't think that this is an option. [Code]. Essentially what I want is an eventhandler that fires whenever the Checkstate of the listviewitem changes.
View 3 RepliesI trying to get what I think should be a simple thing. I have a checked treeview. I need to get the text of each checked node into a string. For the life of me I can't get it. I am trying to loop thru all the nodes and see if they are checked but I keep getting a "object reference not set to an instance of an object" but I don't know why.
Dim value As String
Dim node As TreeNode
Dim i As Long
[Code]....
I have a previous project that, when the user selected a specific settings, a ListView SubItem's Text was changed. There's nothing functional to this than to allow the user to see every option they've chosen.However, when I do the same on a new project, I get an error: InvalidOperation Exception: The error is: InvalidArgument=Value of '0' is not valid for 'index'..I've determine that it is the piece of code that specify's the text of the ListView SubItem. I don't know what's going on because I've duplicated everything from one app to the next.The ListView has it's columns, items, and sub items added during design time.[code]
View 1 Replieshow do i make an event for only one checkbox in the checked list box ie there are 3 items
item A
item B < this one needs to have the event...
item C
In Vb.net 2005 how can i trap the checked/unchecked state of a datetimepicker through an event. I'm trying to execute two different methods based on the checked/unchecked state of a datetimepicker when the user clicks the datetimepicker. When the user checks the dtPicker Method A is executed, when the user unchecks it Method B is executed. How can i trap it.
View 1 RepliesI have two radio buttons. I fhte user swtich between radio buttons, I need to popup warning message and if user confirm, then only I need to swtich to next radio button. Otherwise I shouldnt switch. I am using CheckedChanged event. As by the time I popup warning message, control is already switched. I tried adding and removing event handler.
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I've been having a problem setting certain items in a listbox as checked when the form is loaded. I have tried putting the code in the form_activate, form_load, and form_shown events and each still crashes when it encounters:
[Code]....
How can i trap the checked/unchecked state of a datetimepicker through an event. I'm trying to execute two different methods based on the checked/unchecked state of a datetimepicker when the user clicks the datetimepicker. When the user checks the dtPicker Method A is executed, when the user unchecks it Method B is executed. How can i trap it.
View 6 RepliesInsert checkbox checked value when checked to textbox as comma seperated string in vb.net or javascript
suppose i have 3 checkboxes and and 1 textboxes in my webpage.aspx
when i checked checkbox1 and checkbox2 then in textbox it will appear as 1,2 only on checkboxes checked event ...
and i want its revert also :
if i set textbox de
my form contains a checked list box [data coming from the database] a combo box [bind to a database table product] and a listview [was previously a listbox]
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project im working on for my course,the idea is a photo printing machine that loads up 4 images if usb stick is checked and a different 4 if memory card is checked. and then whatever image is selected appears in the big picturebox on the left [URL] i have 2 print size options set as radiobuttons, radiobutton 1 = 6x4, which costs 25cent per photo, radiobutton 2 = 8x10, and is 50cent per photo.i also have a textbox which will display the number of copies to be printed So here's my dilemma, when the print button is selected alongside one of the radiobuttons i want it to display a message saying something like this "you have selected (whatever the amount of copies)of this photo sized 6x4, or 8x10 depending on which radiobutton is selected, and i want it to display the total cost which is the number of copies multiplied by the rate for the print size selected, then an option saying "Do you wish to proceed" Yes or No.
I did something similar to this in class earlier in the year but cant remember it, it was an airline booking program with 3 types of payment cash, visa or mastercard,upon booking a message popped up saying there is a certain percentage discount for using visa or mastercard
im making dynamic sql statement rmode is a radio button and tmode is a combo box
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I've got a checked listbox on my form which saves the checked items to a spot in my database on the .ItemCheck event.But there's a problem, when I begin checking items, I check the box and click off it, but it doesn't save. (This is if I've only chosen one item)
If I choose two or more items it will save, but unchecking them takes a lot of clicking around to figure it out.Is there a better event that I can use? I've tried the SelectedIndexChanged and that has the same result, there's a lot of clicking around in the checkboxes to end up with the desired selected items, and it does not allow a single item.
In a listview with check boxes, there are two fields being loaded, ID and Lastname. With this information I want to get the ID of the person whose box is checked with this sub:
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Is there a way to validate a groupbox with a couple radiobuttons in it to make sure that one of the radiobuttons is selected?
Heres why I need this. I need a user to be able to select their class rank out by way of radiobuttons in a groupbox. When they click submit, I need to validate that atleast one of the radiobuttons got selected and if not display a messagebox.
I got one reply early of:
If myGroupBox.Controls.OfType(Of RadioButton).Count(Function(rb) rb.Checked) = 0 Then
'There is no RadioButton checked in myGroupBox.
End If
Is there any other ways other then that? Preferrably a more 'dumbed' down way? This is for just an entry level VB class, I would prefer not to use something of that nature if there is another way.
Im basicly making a "Settings" form and I want it to be able to check more then one radio button, but only 1 per "line" (One Per Setting)
View 4 RepliesI have about four columns inside my listview.I also have checkboxs that are located to the left of the listview. A checkbox is added to first column but how would I check if the checkbox is checked?
View 2 RepliesI'm trying to see what checkbox is selected is checked
With this code.
[code]...
Unable to cast object of type 'System.String' to type 'System.Windows.Forms.CheckBox'.
How can I check if there is at least one checkbox checked?
View 16 Replieshow do i check if a listview checkbox has been checked and prompt the user on what he/she checked.
View 1 RepliesWhen each check box is checked I want the textbox to be updated like in the picture. Is there a better way to do that for the rest you see there other than coding one checkbox at a time?
View 37 RepliesI have a list box with three items in it. This has been disabled and I want to enable a button if all three are checked, i was looking for a CheckedChange type event in the MSDN but could not find anything. How can I do something like this?
View 2 RepliesI use the code below to get the checked item value in my ilstview, i also need the subitem values (there are 2) i can't seem to figure out how.
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I'm making a program but I want it so only 1 radio button can be checked at once?
View 2 Replieshow would i tell if user checked a box in the CheckList Box? Im going to have alot so i need to keep it neet and tidy so it looks clean.
View 3 Replieson cloning a selected listviewitem from listview1 when a button is clicked to listview2. How do I achieve this? Here is the code I have but does not work exactly how I want it, it just makes a clone of all the listviewitems in listview1.
foreach (ListViewItem item in this.listView1.Items)
this.listView2.Items.Add((ListViewItem)item.Clone());
can anyone tell me how to make my program "remeber" checked Radio button.
View 1 RepliesWhats wrong with this code?
When a checkbox is checked, the richtextbox1 will move to a new location in form3.
If CheckBox1.Checked Then
Form3.RichTextBox1.Location = (28,08)
End If
I'm making a program where the order of which check box is checked matters. At the moment theres a loop (as shown below.) but in which order it adds things to my list box... is... iffy. Is there a way to change the order? I tried 'Tab order' but that didn't seem to work.
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I have an idea on how I want to proceed, but thought to get some ideas from you all first. I asked a similar question a while ago, but that involved different controls.I have 7 items in a ListView. If the user checks one of the items, I want a panel with three radio buttons to appear just for that item.I originally thought to make 7 panels, hide all of them, and then show and hide them when appropriate. I know this will work, but I really don't want to just overlap 7 panels and an overall 21 radio buttons.Is there a way I could use only three radio buttons with one panel? Or maybe create the controls during runtime?
View 3 Replies